2 
TABLE OF CONTENTS 
1.  Safety Precautions .............................................3 
2.  Specification .......................................................5 
3.  Features...............................................................9 
4.  Location of Controls and Components..........10 
4.1  Indoor Unit ..................................................10 
4.2  Outdoor Unit ...............................................10 
4.3  Remote Control ..........................................10 
5.  Dimensions .......................................................11 
5.1  Indoor Unit ..................................................11 
5.2  Outdoor Unit ...............................................13 
6.  Refrigeration Cycle Diagram ...........................15 
7.  Block Diagram ..................................................16 
8.  Wiring Connection Diagram ............................19 
8.1  CS-C12MKF CU-C12MKF .........................19 
8.2  CS-C18MKF CU-C18MKF .........................20 
8.3  CS-C24MKF CU-C24MKF .........................21 
8.4  CS-C28MKF CU-C28MKF .........................22 
9.  Electronic Circuit Diagram ..............................23 
9.1  CS-C12MKF CU-C12MKF .........................23 
9.2  CS-C18MKF CU-C18MKF .........................24 
9.3  CS-C24MKF CU-C24MKF .........................25 
9.4  CS-C28MKF CU-C28MKF .........................26 
10. Printed Circuit Board .......................................26 
10.1  Indoor Unit ..................................................27 
11. Installation Instruction.....................................31 
11.1  Select the Best Location.............................31 
11.2  Indoor Unit ..................................................32 
11.3  Outdoor Unit ...............................................36 
12. Installation Instruction.....................................40 
12.1  Select the Best Location.............................40 
12.2  Indoor Unit ..................................................41 
12.3  Outdoor Unit ...............................................45 
13. Operation Control.............................................49 
13.1  Cooling Operation.......................................49 
13.2  Soft Dry Operation......................................51 
13.3  Automatic Operation...................................53 
13.4  Indoor Fan Speed Control ..........................54 
13.5  Outdoor Fan Speed Control .......................56 
13.6  Vertical Airflow Direction Control................56 
13.7  Horizontal Airflow Direction Control............58 
13.8  Powerful Operation.....................................58 
13.9  Quiet Operation ..........................................59 
13.10  Timer Control..............................................60 
13.11  Random Auto Restart Control ....................60 
13.12  Remote Control Signal Receiving Sound...60 
13.13  Patrol Operation .........................................61 
13.14  E-ion operation ...........................................65 
13.15  AUTO COMFORT and ECO NAVI Operation
 ....................................................................68 
14. Protection Control............................................73 
14.1  Restart Control (Time Delay Safety Control)..
 ................................................................... 73
 
14.2  7 Minutes Time Save Control .................... 73 
14.3  60 Seconds Forced Operation .................. 73 
14.4  Starting Current Control ............................ 73 
14.5  Freeze Prevention Control ........................ 74 
14.6  Compressor Reverse Rotation Protection 
Control ....................................................... 74 
14.7  Dew Prevention Control ............................ 75 
15. Servicing Mode ................................................ 76 
15.1  Auto OFF/ON Button ................................. 76 
15.2  Remote Control Button.............................. 77 
16. Troubleshooting Guide................................... 78 
16.1  Refrigeration cycle system ........................ 78 
17. Disassembly and Assembly Instructions ..... 80 
17.1  CS-C12MKF .............................................. 80 
17.2  CS-C18MKF  CS-C24MKF........................ 84 
17.3  CS-C28MKF .............................................. 88 
18. Technical Data ................................................. 92 
18.1  Operation Characteristics.......................... 92 
19. Service Data................................................... 100 
19.1  CS-C12MKF CU-C12MKF ...................... 100 
19.2  CS-C18MKF CU-C18MKF ...................... 101 
19.3  CS-C24MKF CU-C24MKF ...................... 102 
19.4  CS-C28MKF CU-C28MKF ...................... 103 
20. Exploded View and Replacement Parts List104 
20.1  Indoor Unit ............................................... 104 
20.2  Outdoor Unit ............................................ 110